按照《压力容器安全管理人员和操作人员考核大纲》规定,压力容器操作人员年龄应当在18周岁以上(含18周岁),男性年龄不超过()周岁。
A、55
B、60
C、65
参考答案:B
Children had ______ warm clothes to wear and _____ food to eat in the past. [ ]
A. fewer; less
B. less; fewer
C. a fewer; little
D. fewer; a less
小剂量膀胱冲洗,每次注入液体量为()。
A.40ml~50ml
B.50ml~60ml
C.100ml~150ml
D.150ml~200ml
E.200ml~300ml